My husband and I have been using this for almost two years now (the pull out method). I have used the pill, but we think we are pretty talented at this risky method

Having a slightly irregular period, I feel that I am always playing the "waiting game." Of course, if we get pregnant it is not a big deal. But we are both 25 and would like a little more time if we can help it.
I would not recommend this one to a couple where you can not trust the man to let you know 100% of the time. Oh, and pre-cum can pick up sperm from a previous ejaculation (it itself does not have sperm, not that it matters). You want to make sure that the man is truly intune with his own body (knowing when he is about to ejaculate and if he is known to pre-ejaculate), or you will end up pregnant!